X32 is fully implemented in master

[Marek Polacek]

On Wed, May 30, 2012 at 08:42:18AM -0700, H.J. Lu wrote:
> +* Support for x32.  Implemented by H.J. Lu.
> +  Visit <http://sites.google.com/site/x32abi/> for x32 psABI info.

I'd add word "added".  So, "Support for x32 added."

	Marek